Generation of magnetic fields in cosmic string wakes
February 08, 2021
We describe a novel method of generating magnetic fields in cosmic string wakes from neutrino
currents. We show that neutrino currents act as a cross-perturbation across the cosmic string wake.
This cross perturbation along with the high Reynolds number generates a magnetic field in the
wake of the cosmic string. The neutrino current is generated by the neutrinos rotating around the
Abelian Higgs strings. As the string moves through the cosmic plasma, the velocity kick generated
by the motion of the string will enhance the neutrino current in the wake region. The neutrino
current density depends on its distance from the string and is oscillatory in nature. This leads to
neutrino density gradients in the plasma. We have shown that these neutrino gradients give rise
to electron gradients in the plasma, which in turn generate magnetic fields of the order of 10^13
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